The material glass which today is so vital for architecture and interior design is fabricated with the so-called “float procedure”.
During the process the molten glass floats on a bath of liquid tin with temperatures of over 1000° C. As glass is considerably lighter than tin it floats above – comparable to an oil film on water. There it spreads homogenously in the desired material strength inside the boundaries regulated by slide controls in the glass trough. The surface tension of the tin makes both sides of the glass panel perfectly planar without the unevenness generated by earlier production processes, which is special about this procedure. After solidification by nondistorted annealing the panels are cut into initial dimensions of 6,00 x 3,20 m and can be finished later. Of the by glass industry manufactured standard strength of 2,3,4,5,6,8,10,12,15,19 and 24 mm predominantly the strongest are used in the furniture area.
The typical green edge has its origin in the iron oxide contained in the glass mixture became known as the trademark of floatglass. Not until recently the alternative of floatglass with a low level of iron oxide was established on the market. The green edge gives way to a light turquoise gleaming in this version and the glass plane is considerably lighter as well. Especially the modern, puristic and design-oriented style established this glass version quickly, although it is more expensive than classical floatglass due to the special production process.
We use as designation the brand name OPTIWHITE of Pilkington AG (Sir Alastair Pilkington is the inventor of floatglass), colloquially it is also called “clear glass”.